So I say

What I couldn’t have achieved if I hadn’t been hindered by this double who follows me around like a bad twin, who squints at me, smirks at me, leaps on my back, light as a ghost, so I can carry him through my life! I’d have slipped into the world, wouldn’t I? Straight from childhood into adulthood. I’d have been like those people who can talk and sleep in public. So I say, he says.

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Everyone carries a room about inside him. This fact can even be proved by means of the sense of hearing. If someone walks fast and one pricks up one's ears and listens, say in the night, when everything round about is quiet, one hears, for instance, the rattling of a mirror not quite firmly fastened to the wall.